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From "Arya Goudarzi (JIRA)" <j...@apache.org>
Subject [jira] Created: (CASSANDRA-1310) Disallow KS definition with RF > # of nodes
Date Fri, 23 Jul 2010 01:16:50 GMT
Disallow KS definition with RF > # of nodes
-------------------------------------------

                 Key: CASSANDRA-1310
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1310
             Project: Cassandra
          Issue Type: Bug
          Components: Core
         Environment: CentOS 5.1
Trunc July 22nd
            Reporter: Arya Goudarzi
             Fix For: 0.7.0


Cassandra 0.7 allows user to create Keyspaces with Replication Factor >  number of endpoints
causing in java.lang.IllegalStateException: replication factor (2) exceeds number of endpoints
(1) exception in nodetool and Internal Errors on Thrift making the node useless.

Steps to Reproduce:

>From a clean setup of Cassandra:
1. Start a single node out of cluster of 3. This means my configuration has the other two
nodes in the seeds list, but have not restarted them yet;
2. Use Thrift API (I am using PHP) and create a Keyspace with replication factor 2;
3. The command executes with no exception or error;
4. Now try writing to it, you will get TException with Internal Error message;
5. Try nodetool ring and you will get Exception:

Exception in thread "main" java.lang.IllegalStateException: replication factor (2) exceeds
number of endpoints (1)
	at org.apache.cassandra.locator.RackUnawareStrategy.calculateNaturalEndpoints(RackUnawareStrategy.java:61)
	at org.apache.cassandra.locator.AbstractReplicationStrategy.getNaturalEndpoints(AbstractReplicationStrategy.java:87)
	at org.apache.cassandra.service.StorageService.constructRangeToEndpointMap(StorageService.java:536)
	at org.apache.cassandra.service.StorageService.getRangeToAddressMap(StorageService.java:522)
	at org.apache.cassandra.service.StorageService.getRangeToEndpointMap(StorageService.java:496)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:111)
	at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:45)
	at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:226)
	at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138)
	at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:251)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:857)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:795)
	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1449)
	at javax.management.remote.rmi.RMIConnectionImpl.access$200(RMIConnectionImpl.java:90)
	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1284)
	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1382)
	at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:807)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)
	at sun.rmi.transport.Transport$1.run(Transport.java:177)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:553)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:636)

Expected:

1. Either step 3 should not let you create the KS with RF 2 and 1 node in ring, or there should
be a peaceful way for Cassandra to recover from IllegalStateException and replicate once other
nodes become available.

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